Transaxle trouble Options

[Dr Evil]

Well, I was not drunk at this clinic and I am not sure what you are insinuating that I missed at the one at your house, and I take accusations like that seriously. All I have with my biz is my reputation. So, what exactly are you referring to?

And, your assessment that the pinion depth was off is way wrong. Pinion is set finite for noise reasons. It will work just fine if out by an amount that is not ridiculous. If it were out, he would have heard loud whining during the long trial that he did. Your assumption seems to have missed some very key details that were provided.

[Hank914]

Well, I'll be following this with great interest.

I assume you were towed home. You never mentioned if the tires were still locked up when it was put on the flatbed.

What seems really strange to me is the torque applied to the ring and pinion should be at its lowest in 5th gear. Just the opposite of a hard launch in 1st.

(Like when my kid brother was popping wheelies in my Corvair powered sand rail. Lots of little pieces came out of the drain plug that day!)

Tires were locked solid on the road. In the gravel ditch. And on the flatbed tow truck. Tow driver was very careful during the load as he is a porsche oldie fan and did not want to damage the diff/transmission. (Lol). He loaded it rear first by putting the bed about 6 inches from the tires, then dragging the car and tires (still locked) onto the start of the flatbed and then added plastic shims under the tires to allow them to slide on the bed as it was pulled to the middle of the flatbed deck. Same during the unload. I then jacked the rear end up and slipped wheel dollies under the rear wheels to move it into the garage to remove the tranny. The tires were locked until I pulled the tranny out.

And I agree about the torque in 5th being lowest. And little pieces were left in the case. I just did not see any big foreign objects to be named the offender. I might have missed it.. Or it might have disintegrated. Interesting that the "tooth" came off so clean and so large. Almost like I used a chisel. And it fits back on clean ad well. Maybe super glue it back? (IMG:style_emoticons/default/confused24.gif)

[Dr Evil]

Whats the diff look like? A sheared roll pin at the block in the center of the diff would cause a grenade like this.

[Hank914]

Well, I was not drunk at this clinic and I am not sure what you are insinuating that I missed at the one at your house, and I take accusations like that seriously. All I have with my biz is my reputation. So, what exactly are you referring to?

And, your assessment that the pinion depth was off is way wrong. Pinion is set finite for noise reasons. It will work just fine if out by an amount that is not ridiculous. If it were out, he would have heard loud whining during the long trial that he did. Your assumption seems to have missed some very key details that were provided.

Not only me, but the Porsche mechanic I had check it out after I drove around for about 100 miles. He heard nothing from the tranny. What he did find was the cause of the intermittent rattle around the fan. I took off the hose clamps to the heater hoses and left one behind. He pulled it from the fan area before it did anything major. But he tested the tranny shifting, checked the linkage and bushings, and did an overall sanity check. Said the tranny sounded fine, but of course did not pull the tranny and open it up. FWIW

[Hank914]

Whats the diff look like? A sheared roll pin at the block in the center of the diff would cause a grenade like this.

I'm back so I can take some close up photos in a few hours. If I can't get the bearing chases out, I may send you the whole case as well, to do a complete post mortum. That way you can see the diff as well. Or not?

[Dr Evil]

Nah, save the money on shipping unless you really want me to mess with it. If the races give you a hard time, then send it to me and I will handle the whole shooting match. Pics of the diff and associated gears should suffice, though (IMG:style_emoticons/default/smile.gif)

[rhodyguy]

The recent colonic was nothing was nothing like the one held in tacoma. I was there until midnight and I didn't note any consumption of alcohol until nearly everyone cleared out. Much like a beer after work. There was plenty of beer in the coolers and a box full of hard alcohol that went untouched. No snow mobiles raising hell and disturbing the neighbors during the middle of the night either. If you catch my meaning and you get my drift....10 bonus points for fans of Firesign theater that know what that came from.

[Mr.242]

Take a 40 year old transmission. Rebuild it to new spec. Tolerances become tighter than a 'vaginal rejuvenation'.

Facts: both rear wheels locked. Means the diff did not spin. Lock rear wheels caused the spin.
The cracked housing is the result of the torque (energy) goes some somewhere and produces 'work'. That work cracked the cases. It wasn't the case breaking and then wheels locked. Also the energy could have snapped the pinion too. Engine energy is twisting it as the diff quits spinning suddenly.
Autopsy will determine why the diff quit rotating and in such a way it stopped both sides.

Yo 6Freak!!! As for the 'party' insinuation; You're certainly making a huge jump of speculation. The clinic I did i Shelton was all business. I seen some of the hardest working wrenches. There was no one partaking and the 'party' didn't happen as lodging wasn't so easy. A few beverages to wet the whistle but far from impairing anyone from properly rebuilding.

What was the motivation in saying any such garbage? Or slander? Next you'll say it's because we didn't use protection as we screwed off and clearly the tranny caught an STD! Whiskey Tango Foxtrot, over!?

[Hank914]

Take a 40 year old transmission. Rebuild it to new spec. Tolerances become tighter than a 'vaginal rejuvenation'.

Facts: both rear wheels locked. Means the diff did not spin. Lock rear wheels caused the spin.
The cracked housing is the result of the torque (energy) goes some somewhere and produces 'work'. That work cracked the cases. It wasn't the case breaking and then wheels locked. Also the energy could have snapped the pinion too. Engine energy is twisting it as the diff quits spinning suddenly.
Autopsy will determine why the diff quit rotating and in such a way it stopped both sides.

Yo 6Freak!!! As for the 'party' insinuation; You're certainly making a huge jump of speculation. The clinic I did i Shelton was all business. I seen some of the hardest working wrenches. There was no one partaking and the 'party' didn't happen as lodging wasn't so easy. A few beverages to wet the whistle but far from impairing anyone from properly rebuilding.

What was the motivation in saying any such garbage? Or slander? Next you'll say it's because we didn't use protection as we screwed off and clearly the tranny caught an STD! Whiskey Tango Foxtrot, over!?

Probably yanking somebody's chain. (IMG:style_emoticons/default/biggrin.gif) But if he's serious, then I'll add this tidbit. My tranny was "buttoned up" on Sunday late morning, not Sat night. No brewskies, just coffee and donuts.

[Dave_Darling]

No brewskies, just coffee and donuts.

Well, that's your problem right there! Everybody knows that the secret formula for super glue is powdered sugar and gear oil!!

--DD

[veekry9]

https://www.google.ca/#q=fatigue++cracks+in+gears

https://www.google.ca/search?biw=1440&b...ks%20in%20gears

Classic example of tooth-root crack propagation.
Ask any A+P if a visual inspection is enough.
Magnaflux,X-ray,ultrasonic,penetrant methods are required.
Even then..

Further reading.
The science of why things break.

http://www.kettering.edu/news/contact-fatigue-numbers-0

Keep it super lubed and cooled.

[Hank914]

More pics. The big piece is from the pinion.
The small pieces are from the diff. 15 outta 31 teeth shredded.

[Hank914]

The differential. The quarter is for reference only. It was not in the transaxle.


And now some close ups.



The quarter is underneath the first (or last?) broken tooth on the diff.

[Hank914]

Here is a pic of the quarter next to the other side of the diff, where the teeth broke.

[SirAndy]

And now some close ups

(IMG:style_emoticons/default/unsure.gif)

[Dr Evil]

How about the guts of the diff? I expect the gear carnage, but the guts may tell us something.

[Hank914]

Guts looked clean. Both bearings spin freely. Pics to follow.

[Steve]

(IMG:style_emoticons/default/hide.gif)
Maybe that quarter caused it!! Just kidding..
Seriously I am also curious what could of caused this.

[Hank914]

Pics galore.

[Hank914]

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